JP2006036032A - Air-conditioner for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioner for an automobile in which the hot air from a heat exchanger for heating can flow to the rear seat in a cabin while the blowing resistance is suppressed. <P>SOLUTION: A blowout passage 41 for the rear seat fitted with an opening/closing door 42 is connected with the downstream of a heater core 7 installed on the way of a hot air passage 12. Therefore, the hot air flowing in the hot air passage 12 can flow to the blowout passage 41 directly in detouring an air mix chamber 14. Thereby the hot air can flow to the rear seat while the blowing resistance is suppressed. On the projection surface from the perpendicularly intersecting direction Y on the blowing surface of the heater core 7, the inlet 41a to the blowout passage 41 for rear seat is in a position not interfering with the inlet 12a to the hot air passage and opposite to the air mix chamber 14 about the inlet 12a. Therefore, the hot air flowing in the hot air passage 12 when the blowout passage 41 is opened can be prevented from flowing in eccentricity to the blowout passage 41 for rear seat solely. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner for automobiles.

  A conventional automobile air conditioner is disclosed in Patent Document 1, for example. This automotive air conditioner includes a warm air passage in which a heat exchanger for heating is arranged and a warm air heated by the heat exchanger for heating, a bypass passage in which a cool air is caused to bypass the heating heat exchanger, and a warm air passage An air mix door that adjusts the air volume ratio between the air passage and the bypass passage, an air mix chamber that is provided at the junction of the hot air passage and the bypass passage and mixes the hot air and the cold air, and is branched from the air mix chamber An automobile air conditioner including one or more front-seat outlet passages facing the front seat of the vehicle compartment is disclosed.

Patent Document 2 describes an example in which a rear seat outlet passage (240) that branches from the front seat outlet passage (23) to the rear seat of the passenger compartment is branched. In this case, since the warm air can be blown to the rear seat of the passenger compartment, the heating performance of the rear passenger compartment can be improved.
JP-A-6-74679 Japanese Patent Laid-Open No. 10-114209 JP 2000-105091 A

  However, in the prior art, the warm air heated by the heater core (13) is heated from the heater core (13) → the warm air passage (18) → the air mix chamber (19) → the front seat blowing passage (23) → the rear seat blowing. It will be distributed in the maze shape in the order of passage (240) → rear seat. For this reason, in order to blow out warm air to the rear seat, ventilation resistance becomes high, and it is difficult to secure the amount of ventilation, and problems such as increased circulation sound occur. In the description so far, the reference numerals in parentheses follow the reference numerals in Patent Document 2.

  In consideration of the above circumstances, the present invention is to provide an automotive air conditioner that can distribute hot air from a heat exchanger for heating toward a rear seat of a passenger compartment while suppressing ventilation resistance.

According to the first aspect of the present invention, there is provided a bypass passage for flowing cold air that bypasses the heat exchanger for heating, a flow of air passing through the heat exchanger for heating with the heating heat exchanger disposed therein, and the heat exchanger for heating. A hot air passage whose downstream side is curved toward the bypass passage, cold air flowing through the bypass passage, an air mix door for controlling the flow rate of the hot air flowing through the hot air passage, and these bypass passages An air mix chamber that mixes hot air and cold air at a position where it joins the hot air passage, and one or more front seat outlet passages branched from the air mix chamber toward the front seat of the passenger compartment, the bypass An automotive air conditioner that mixes cold air from the passage and warm air from the hot air passage in an air mix chamber to produce air-conditioning air having a predetermined temperature and blows the air-conditioning air into the vehicle interior.
A rear-seat blowout passage that branches from the downstream side of the heating heat exchanger in the middle of the warm-air passage toward the rear seat of the passenger compartment, and an open / close door that opens and closes the rear-seat blowout passage,
The rear seat outlet passage is located at a position that does not interfere with the inlet of the hot air passage on a projection plane along a direction orthogonal to the ventilation surface of the heat exchanger for heating, and the inlet of the hot air passage. The air mix chamber is located on the opposite side of the air mix chamber.

  The invention of claim 2 is the automotive air conditioner according to claim 1, wherein the hot air guide wall that guides the hot air that has passed through the heat exchanger for heating toward the bypass passage is provided for the heating. It is provided on the downstream side of the heat exchanger so as to be substantially parallel to the ventilation rear surface of the heating heat exchanger.

  The invention of claim 3 is the automotive air conditioner according to claim 1 or claim 2, wherein the heating heat exchanger is partitioned into a plurality of paths, and the temperature of the heating heat exchanger is A path upstream of the medium is positioned on the air mix chamber side, and a path downstream of the heating medium of the heat exchanger for heating is positioned on the inlet side of the outlet passage for the rear seat. Is.

According to a fourth aspect of the present invention, there is provided a bypass passage for flowing cold air that bypasses the heat exchanger for heating, and a flow of air that is provided with the heat exchanger for heating and that passes through the heat exchanger for heating and the heat exchanger for heating. A hot air passage whose downstream side is curved toward the bypass passage, cold air flowing through the bypass passage, an air mix door for controlling the flow rate of the hot air flowing through the hot air passage, and these bypass passages An air mix chamber that mixes hot air and cold air at a position where it joins the hot air passage, and one or more front seat outlet passages branched from the air mix chamber toward the front seat of the passenger compartment, the bypass An automotive air conditioner that mixes cold air from the passage and warm air from the hot air passage in an air mix chamber to produce air-conditioning air having a predetermined temperature and blows the air-conditioning air into the vehicle interior.
One or more rear-seat blowout passages that branch from the air mix chamber toward the rear seats of the passenger compartment, and at least one rear-seat blowout passage downstream from the heating heat exchanger in the middle of the hot air passage A communication path that communicates with the middle of the door, and an open / close door that opens and closes the communication path,
The communication path is at a position that does not interfere with the inlet of the hot air path on the projection plane along a direction orthogonal to the ventilation surface of the heater core, and is opposite to the air mix chamber across the inlet of the hot air path. It is the position of the side.

  A fifth aspect of the present invention is the automotive air conditioner according to the fourth aspect, wherein the hot air guide wall that guides the warm air that has passed through the heat exchanger for heating toward the bypass passage is provided for the heating. It is provided on the downstream side of the heat exchanger so as to be substantially parallel to the ventilation rear surface of the heating heat exchanger.

  A sixth aspect of the present invention is the automotive air conditioner according to the fourth or fifth aspect, wherein the heating heat exchanger is partitioned into a plurality of paths, and the temperature of the heating heat exchanger is A path upstream of the medium is positioned on the air mix chamber side, and a path downstream of the heating medium of the heat exchanger for heating is positioned on the communication path side.

  According to the first aspect of the present invention, the hot air flowing through the hot air passage can be made to flow through the rear seat outlet passage by shortcuting the air mix chamber. Therefore, it is possible to distribute warm air to the rear seat while suppressing ventilation resistance. In addition, the inlet of the rear-seat outlet passage is located at a position where it does not interfere with the inlet of the hot air passage on the projection surface from the direction orthogonal to the ventilation surface of the heater core, and is opposite to the air mix chamber with the inlet of the hot air passage interposed therebetween. Therefore, when the rear seat outlet passage is opened, it is possible to prevent the warm air flowing through the hot air passage from being biased to the rear seat outlet passage.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the warm air guide wall is provided substantially parallel to the rear surface of the heating heat exchanger, the ventilation direction of the heating heat exchanger The air conditioner for automobiles can be reduced in size. For example, when the ventilation direction of the heating heat exchanger is the vehicle longitudinal direction, the automobile air conditioner can be downsized in the vehicle longitudinal direction, and when the ventilation direction of the heating heat exchanger is the vertical direction, the automobile Can be downsized vertically.

  In such a structure, in particular, since the entrance of the rear seat outlet passage is disposed close to the ventilation rear surface of the heat exchanger for heating, the function and effect of claim 1 are further exhibited.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the upstream side path having a high temperature is located on the air mix chamber side, and the downstream side path having a low temperature is the inlet side of the rear passage outlet passage Therefore, it is possible to reliably avoid the temperature on the rear seat outlet passage side from becoming too high.

  According to invention of Claim 4, the warm air which flows through a warm air channel | path can be made to short-circuit an air mix chamber, and can be flowed to the blowing path for rear seats via a communicating path. Therefore, it is possible to flow warm air to the rear seat while suppressing ventilation resistance. In addition, the communication path is located at a position that does not interfere with the inlet of the hot air passage on the projection plane from a direction orthogonal to the ventilation surface of the heater core, and at a position opposite to the air mix chamber across the inlet of the hot air passage. Therefore, when the communication passage is opened, it is possible to prevent the warm air flowing through the warm air passage from flowing only through the communication passage to the rear-seat blowing passage.

  According to the invention of claim 5, in addition to the effect of the invention of claim 4, the hot air guide wall is provided substantially parallel to the rear face of the heating heat exchanger, so the ventilation direction of the heating heat exchanger The air conditioner for automobiles can be reduced in size. For example, when the ventilation direction of the heating heat exchanger is the vehicle longitudinal direction, the automobile air conditioner can be downsized in the vehicle longitudinal direction, and when the ventilation direction of the heating heat exchanger is the vertical direction, the automobile Can be downsized vertically.

  In such a structure, in particular, since the communication path is disposed close to the ventilation rear surface of the heat exchanger for heating, the effect of claim 1 is further exhibited.

  According to the invention of claim 6, in addition to the effect of the invention of claim 4 or 5, the upstream path having a high temperature is located on the air mix chamber side, and the downstream path having a low temperature is located on the communication path side. Thus, it is possible to reliably avoid that the temperature of the rear seat outlet passage becomes too high.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1st Embodiment: FIGS. 1-12 shows 1st Embodiment of this invention. First, the schematic structure of the air conditioner will be described with reference to FIGS. FIG. 1 is a side view showing an outline of an automotive air conditioner according to the first embodiment, FIG. 2 is a top view of the air conditioning unit of the automotive air conditioner, and FIG. 3 is a front view of a part of the air conditioning unit of the automotive air conditioner. FIG.

  In FIG. 1, 1 is an air conditioning unit 1 of a vehicle air conditioner, 51 is an instrument panel, 52 is a front window, 53 is a dash panel, 54 is a floor tunnel, and 55 is a vehicle interior. An automotive air conditioner includes an intake box (not shown) that selectively introduces inside and outside air, a blower (not shown) that sends air from the intake box downstream, and temperature control of the air from the blower. And an air conditioning unit 1 that blows out into the vehicle interior 55.

  The air conditioning unit 1 is disposed in the center of the instrument panel 51 in the vehicle width direction. The air conditioning unit 1 is configured by disposing a heat exchanger 7 for heating, a heat exchanger 5 for cooling, and the like in an air conditioning case 2 formed by an air passage. The air conditioning case 2 has an inlet 4 as an upstream end of the air passage, and air outlets 16b to 20b and 41b as openings of the air passage downstream end (see FIGS. 2 and 3). Air outlet ducts 16D to 20D and 41D are connected to the air outlets 16b to 20b and 41b, and the temperature-controlled air in the air conditioning case 2 is blown into the vehicle interior 55 through the connection ducts 16D to 20D and 41D. It has become so.

  Next, the structure of the air conditioning unit 1 will be described in more detail. 4 is a sectional view taken along line SA-SA in FIG. 3, FIG. 5 is a sectional view taken along line SB-SB in FIG. 3, and FIG. 6 is a sectional view taken along line SC-SC in FIG. .

  As shown in FIG. 4, an evaporator 5 as a cooling heat exchanger, an air mix door 6 as a temperature adjusting means, and a heater core 7 as a heating heat exchanger are arranged in the air conditioning case 2.

  The evaporator 5 as a cooling heat exchanger performs air cooling and dehumidification by circulating a low-temperature and low-pressure refrigerant inside. The evaporator 5 is arranged substantially vertically in a slightly tilted posture so as to ventilate from the front to the rear of the vehicle.

  On the other hand, the heater core 7 as a heat exchanger for heating heats the air heat that is ventilated by circulating a high-temperature heating medium such as engine cooling water inside. The heater core 7 is disposed opposite the evaporator 5 on the vehicle rear side. Further, the heater core 7 is set to have a smaller ventilation area and a smaller height size than the evaporator 5, and is further tilted backward than the evaporator 5 and is opposed to the lower portion of the evaporator 5.

  The downstream side of the evaporator 5 branches into a warm air passage 12 and a bypass passage 13. The hot air passage 12 is a passage through which the cool air that has passed through the evaporator 5 passes through the heater core 7 and the heated hot air is circulated. One bypass passage 13 bypasses the heater core 7 with the cool air that has passed through the evaporator 5. It is a passage that circulates as it is. The inlet 12a of the warm air passage 12 and the inlet 13a of the bypass passage 13 are lined up and down.

  An air mix door 6 as a temperature adjusting means is disposed at the inlets 12a and 13a, and the air volume ratio distributed to the bypass passage 13 and the hot air passage 12 by the air mix door 6 can be adjusted. . The air mix door 6 of this embodiment is a plate-like sliding door that bulges in a circular arc shape on the downstream side, and slides up and down over both the inlets 12a and 13a to both the passages 12 and 13. The air volume ratio is adjusted.

  The bypass passage 13 is formed in a substantially straight shape toward the vent blowing passages 18 and 19 through an air mix chamber 14 described later. On the other hand, the warm air passage 12 is curved at the downstream side of the heater core 7 by the warm air guide wall 30 toward the upper bypass passage 13 side. The warm air guide wall 30 includes a lower side portion 30a, a facing portion 30c, and an upper side portion 30e and is formed in a substantially U shape. The lower side portion 30a is provided along the lower end portion of the heater core 7, the facing portion 30c is arranged to face the rear surface of the heater core 7 substantially in parallel, and the upper side portion 30e is provided along the upper end portion of the heater core 7. The lower side portion 30a and the facing portion 30c are continuous via the arcuate curved portion 30b, and the facing portion 30c and the upper portion 30e are continued via the arcuate curved portion 30d.

  A confluence portion downstream of the bypass passage 13 and the hot air passage 12 is set as an air mix chamber 14 for mixing cold air and hot air. A plurality of front seat outlet passages 16 to 20 are branched from the air mix chamber 14. The front seat outlet passages 16 to 20 of this embodiment are a defroster outlet passage 16, an upper vent outlet passage 17, vent outlet passages 18 and 19, and a foot outlet passage 20.

  Next, each blowing passage 16-20 is demonstrated in detail.

  The defroster outlet passage 16 is branched upward from the air mix chamber 14. An opening / closing door 16C is provided at the inlet 16a of the defroster outlet passage 16, and the defroster outlet passage 16 can be opened / closed by the opening / closing door 16C. Further, a blowout duct 16D for blowing conditioned air toward the front window is connected to the blowout port 16b of the defroster blowout passage 16.

  The upper vent blowing passage 17 is branched upward from the air mix chamber 14. An opening / closing door 17C is provided at the inlet 17a of the upper vent blowing passage 17, and the upper vent blowing passage 17 can be opened / closed by the opening / closing door 17C. Further, a blowout duct 17 </ b> D for blowing out upward of the front seat occupant is connected to the blowout opening 17 b of the upper vent blowout passage 17.

  Here, air outlets 16b of the defroster air outlet 16 are provided on both sides in the vehicle width direction of the air outlet 17b of the upper vent air outlet 17 (see FIG. 2), and the open / close doors 16C, 17C of the air outlets 16, 17 are one. The rotating shaft is shared and opens and closes together.

  The vent outlet passages 18 and 19 are branched from the air mix chamber 14 toward the rear of the vehicle, and are branched upward from the air vent chamber 18 and the center vent outlet passage 18 for blowing the conditioned air toward the upper seat passenger's upper body. A side vent blowing passage 19 for blowing air-conditioned air toward the side window. The inlets 19a, 19a of the side vent outlet passages 19, 19 are provided on both sides in the vehicle width direction of the inlet 18a of the center vent outlet passage 18. The inlets 18a and 19a are respectively provided with opening and closing doors 18C and 19C, and the opening and closing passages 18 and 19 can be opened and closed by the opening and closing doors 18C and 19C. The open / close door 18C and the open / close door 19C share a single rotating shaft and are integrally opened and closed. Further, the opening / closing door 18C and the opening / closing door 19C are bent in a square shape along the passages 18 and 19 when the passages are fully opened, and thereby, the blowing performance of the cool air from the vent blowing passage (the blowing performance during cooling). ) Has a shape that lowers the airflow resistance so that it is kept high.

  An air outlet 18b of the center vent air outlet 18 is connected to an air outlet 18D provided toward the upper seat passenger's upper body, while an air outlet 19b of the side vent air outlet 19 is directed to a side window (not shown). An outlet duct 19D to be provided is connected.

  The foot blowing passage 20 is branched from the air mix chamber 14 toward the feet of the front seat occupant. The foot outlet passage 20 includes cylindrical inlet portions 20 a provided on both sides of the air mix chamber 14 in the vehicle width direction. An opening / closing door 20C is provided at the inlet 20a of the foot blowing passage 20, and the foot blowing passage 20 is opened and closed by the foot opening / closing door 20C.

  In this embodiment, in addition to the blowout passages 16 to 20 for the front seat, a blowout passage 41 for the rear seat is also provided. The rear seat outlet passage 41 is branched from the downstream side of the heater core 7 in the middle of the hot air passage 12. An opening / closing door 42 that opens and closes the inlet 41 a of the rear seat outlet passage 41 is provided at the inlet 41 a of the rear seat outlet passage 41. When the inlet 41a of the rear seat outlet passage 41 is opened by the open / close door 42, the hot air flowing through the hot air passage 12 flows directly into the rear seat outlet passage 41 as a shortcut to the air mix chamber 14. ing.

  The inlet 41 a of the rear seat outlet passage 41 is open near the arcuate curved portion 30 b of the hot air guide wall 30 of the hot air passage 12. Further, the inlet 41 a of the rear seat outlet passage 41 is located at a position that does not interfere with the inlet 12 a of the hot air passage 12 on the projection plane along the direction Y orthogonal to the ventilation surface of the heater core 7 and the hot air passage 12. The air mix chamber 14 is located on the opposite side of the inlet 12a (see FIG. 5).

  FIG. 7 shows the arrangement direction of the heater core 7, and more specifically shows the arrangement positional relationship between the heating medium upstream path and the heating medium downstream path.

  As shown in FIG. 7, the heater core 7 of this embodiment is divided into two upper and lower paths 7A and 7B. The heating medium introduced into the heater core 7 from the heating medium inlet 8 first flows through the upper path 7A, then makes a U-turn, flows through the lower path 7B, and is finally discharged from the heating medium outlet 9. That is, in this embodiment, the upper path 7A close to the air mix chamber 14 serves as the heating medium upstream path, and the lower path 7B close to the inlet 41a of the rear seat outlet passage 41 serves as the heating medium downstream path. Yes.

"Action"
The flow of the conditioned air in the main blowing mode of the automotive air conditioner configured as described above will be described with reference to FIGS.

Vent blowing mode (Fig. 8)
First, the vent blowing mode will be described with reference to FIG. The vent blowing mode is a mode for blowing conditioned air from the vent blowing passages 18 and 19. Specifically, by adjusting the opening degree of the open / close doors 16C to 20C and 42, the upper vent blowing passage 17 is fully closed, the center vent blowing passage 18 is fully opened as shown in FIG. 8a, and the defroster blowing passage 16 is opened as shown in FIG. 8b. Fully closed, the side vent outlet passage 19 is fully opened, and the foot outlet passage 20 is fully closed as shown in FIG. 8c. In this vent blowing mode, the temperature control mode is set to the full cool mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully closed and the bypass passage 13 is fully opened, and only the cold air is blown out.

  As a result, the cold air flowing into the air mix chamber 14 from the bypass passage 13 is blown into the vehicle interior 55 through the center vent blow passage 18 and the side vent blow passage 19, respectively.

Bi-level blowing mode (Fig. 9)
Next, the bi-level blowing mode will be described with reference to FIG. The bi-level blowing mode is a mode in which conditioned air is blown from both the vent blowing passages 18 and 19 and the foot blowing passage 20. Specifically, by adjusting the opening degree of the opening / closing doors 16C to 20C and 42, the upper vent blowing passage 17 is fully closed as shown in FIG. 9a, the center vent blowing passage 18 is fully opened, and the defroster blowing passage 16 is shown in FIG. 9b. Is fully closed, the side vent outlet passage 19 is fully opened, and the foot outlet passage 20 is opened as shown in FIG. 9c. In this bilevel blowing mode, the temperature control mode is set to the air mix mode. In other words, the air mix door 6 is set to open the hot air passage 12 and open the bypass passage 13 so as to blow out the temperature-controlled air mixed with the cold air and the hot air in the air mix chamber 14.

  As a result, the conditioned air that has been mixed in the air mix chamber 14 and has the required temperature is blown into the vehicle interior 55 through the center vent blow passage 18, the side vent blow passage 19, and the foot blow passage 20, respectively.

Foot blowing mode (Figure 10)
Next, the foot blowing mode will be described with reference to FIG. The foot blowing mode is a mode for blowing conditioned air from the foot blowing passage 20. Specifically, by adjusting the opening degree of the open / close doors 16C to 20C and 42, the upper vent blowout passage 17 is fully closed, the center vent blowout passage 18 is fully closed as shown in FIG. 10a, and the defroster blowout passage 16 is shown in FIG. 10b. Is fully closed, the side vent outlet passage 19 is opened, and the foot outlet passage 20 is opened as shown in FIG. 10c. Further, the inlet 41a of the rear seat outlet passage 41 is fully opened. In this vent blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  As a result, as shown in FIG. 10b, the warm air flowing into the warm air passage 12 collides with the warm air guide wall 30 and is divided into the air mix chamber 14 side and the rear seat outlet passage 41 side. The hot air flowing into the air mix chamber 14 through the hot air passage 12 (see FIG. 10b) is then blown out into the vehicle interior 55 through the side vent blowing passage 19 and the foot blowing passage 20, as shown in FIG. 10c. On the other hand, the warm air that has flowed into the rear seat outlet passage 41 is blown into the passenger compartment 55 from the feet on the rear passenger seat side.

  Here, when the warm air that has passed through the heater core 7 collides with the warm air guide wall 30 and is divided into the air mix chamber 14 side and the rear-seat blowout passage 41 side as described above, the air flows to the rear ventilation surface 7b of the heater core 7. On the other hand, since the rear seat outlet passage 41a is close, there is a concern that the warm air that has passed through the heater core 7 flows only in the rear seat outlet passage 41. However, in this embodiment, the rear seat outlet passage 41a does not interfere with the hot air passage inlet 12a when viewed from the ventilation direction Y and is located on the opposite side of the air mix chamber 14 with the hot air passage inlet 12a interposed therebetween. Therefore, it is possible to prevent the warm air from flowing in the rear seat outlet passage 41 alone.

Differential foot blowing mode (Figure 11)
Next, the differential foot blowing mode will be described with reference to FIG. The differential foot blowing mode is a mode in which conditioned air is blown from the defroster blowing passage 16 and the foot blowing passage 20. Specifically, by adjusting the opening degree of the open / close doors 16C to 20C and 42, the upper vent blowout passage 17 is fully closed, the center vent blowout passage 18 is fully closed as shown in FIG. 11a, and the defroster blowout passage 16 is shown in FIG. 11b. Is opened, the side vent outlet passage 19 is opened, and the foot outlet passage 20 is opened as shown in FIG. 11c. In this differential foot blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  Thereby, the warm air flowing into the air mix chamber 14 from the warm air passage 12 is blown into the vehicle interior 55 through the side vent blow passage 19, the defroster blow passage 16, and the foot blow passage 20, respectively.

Defroster blowing mode (Fig. 12)
Next, the defroster blowing mode will be described with reference to FIG. The defroster blowing mode is a mode for blowing conditioned air from the defroster blowing passage 16. Specifically, by adjusting the opening degree of the open / close doors 16C to 20C and 42, the upper vent blowing passage 17 is fully closed, the center vent blowing passage 18 is fully closed, as shown in FIG. 12a, and the defroster blowing passage 16 is shown in FIG. 12b. Is opened, the side vent outlet passage 19 is opened, and the foot outlet passage 20 is fully closed as shown in FIG. 12c. In this defroster blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  Thereby, the warm air flowing into the air mix chamber 14 from the warm air passage 12 is blown into the vehicle interior 55 through the side vent blowing passage 19 and the defroster blowing passage 16, respectively.

"effect"
The effects of the automotive air conditioner of the first embodiment will be summarized below.

  (I) According to the first embodiment, since the rear-seat blowout passage 41 is connected to the downstream side of the heater core 7 in the middle of the hot air passage 12, the hot air after the heater core 7 is ventilated is used as a shortcut for the air mix chamber 14. It can be made to flow as it is to the blowout passage 41 for the rear seats. Therefore, it is possible to distribute warm air to the rear seat while suppressing ventilation resistance. At this time, in this embodiment, the inlet 41a of the rear seat outlet passage 41 is located at a position where it does not interfere with the hot air passage inlet 12a on the projection plane from the orthogonal direction Y of the ventilation surface 7b of the heater core 7 and the hot air passage inlet 12a. Therefore, when the rear seat outlet passage 41 is opened, the hot air flowing through the hot air passage 12 is biased to flow only in the rear seat outlet passage 41. Can be prevented.

  (II) In particular, in order to make the bypass passage and the hot air passage compact while ensuring the maximum cool air blowing performance, the bypass passage 13 is linear and the downstream side of the heater core 7 in the hot air passage 12 is the bypass passage 13. In the structure that is curved toward the rear, the inlet 41a of the rear-seat blowout passage 41 is likely to be disposed close to the ventilation rear surface 7b of the heater core 7, so that the above (I) is more effective.

  (III) Further, according to the first embodiment, the warm air guide wall 30 is disposed substantially parallel to the ventilation rear surface 7 b of the heater core 7, so that the vehicle is directed toward the ventilation direction Y of the heater core 7. The air conditioner can be downsized. For example, in this embodiment, since the ventilation direction Y of the heater core 7 is the vehicle front-rear direction, the automobile air conditioner can be downsized in the vehicle front-rear direction. In such a structure, the inlet 41a of the rear seat outlet passage 41 is more easily disposed closer to the ventilation rear surface 7b of the heater core 7, so that the above (I) becomes more effective.

  (IV) According to the first embodiment, the upstream path 7A having a high temperature is positioned on the air mix chamber 14 side, and the downstream path 7B having a low temperature is positioned on the rear seat outlet passage 41a side. Therefore, it is possible to reliably avoid that the temperature of the hot air flowing toward the rear seat outlet passage 41 becomes too high. This is due to the fact that the front seat outlet passage is mainly used and the rear seat outlet passage is subordinate. In this embodiment, the heater core 7 has two paths. However, the heater core 7 is composed of three or more paths, the path on the upstream side of the heating medium is disposed on the air mix chamber 14 side, and the path on the downstream side of the heating medium. The same effect can be obtained by arranging the rear seat on the rear passage outlet 41a side.

  Next, other embodiments will be described. In the following embodiments, the same or similar configurations as those in the first embodiment are denoted by the same reference numerals, and the description of the configurations and the effects thereof are omitted.

  Second Embodiment: FIGS. 13 to 24 show a second embodiment of the present invention.

  The automotive air conditioner of the second embodiment is different from the first embodiment mainly in that the rear seat outlet passages 21 and 22 are also branched from the air mix chamber 14 in addition to the front seat outlet passages 16 to 20. Is the difference. Hereinafter, the difference from the first embodiment will be mainly described.

  More specifically, the rear seat vent outlet passage 21 is branched from the front seat center vent outlet passage 18 downstream of the air mix chamber 14, and the rear seat foot outlet passage 22 is downstream of the air mix chamber 14. It branches off from the entrance 20a of the front seat foot outlet passage 20. The rear seat vent outlet passage 21 is opened and closed together with the front seat center vent outlet passage 18 by an open / close door 18C. The rear seat foot outlet passage 22 is opened and closed together with the front seat foot outlet passage 20 by an opening / closing door 20C. The foot opening passages 20 and 22 can be fully closed at the same time by the opening / closing door 20C, the other can be closed with one open, and the both foot discharge passages 20 and 22 can be opened simultaneously.

  These rear-seat vent outlet passage 21 and rear-seat foot outlet passage 22 are both provided on the vehicle rear side of the hot air passage 12 along the hot air passage 12. Only separated. The rear seat foot outlet passages 22 are located on both sides of the rear seat vent outlet passage 21 in the vehicle width direction.

  In the arcuate curved portion 30 b below the hot air guide wall 30, communication passages 33, 33 that connect the hot air passage 12 and the middle part of the foot blowing passages 22 for both rear seats open. An open / close door 34 for opening and closing the communication path 33 is provided. The open / close doors 34, 34 of both communication passages 33, 33 are integrally formed by a rotating shaft 35. Depending on the opening / closing position of the opening / closing door 34, the whole warm air flowing into the intermediate position of the rear seat foot outlet passage 22 through the communication passage 33 can be made to flow backward to the upstream side of the rear seat foot outlet passage 22, It is also possible to flow upstream and downstream of the rear seat foot outlet passage 22. The communication passage 33 opens toward the downstream side of the rear seat foot outlet passage 22, and the open / close door 34 of the communication passage 33 faces the downstream side of the rear seat foot outlet passage 22 when fully opened. Therefore, when the open / close door 34 of the communication passage 33 is fully opened, the flow can mainly flow to the downstream side of the rear seat foot outlet passage 22.

  Here, the communication path 33 is a position that does not interfere with the inlet 12a of the hot air passage 12 on the projection plane along the direction Y orthogonal to the ventilation surface of the heater core 7 and sandwiches the inlet 12a of the hot air passage 12 therebetween. It is in a position opposite to the air mix chamber 14 (see FIG. 17).

  The flow of the conditioned air in the main blowing mode of the automotive air conditioner of the second embodiment configured as described above will be described with reference to FIGS.

Vent blowing mode (Figure 20)
First, the vent blowing mode will be described with reference to FIG. The vent blowing mode is a mode for blowing conditioned air from the vent blowing passages 18, 19, and 21. Specifically, by adjusting the opening degree of the opening / closing doors 16C to 20C and 34, the upper vent blowing passage 17 is fully closed as shown in FIG. 20a, the center vent blowing passage 18 is fully opened, and the defroster blowing passage 16 is opened as shown in FIG. 20b. Fully closed, the side vent outlet passage 19 is fully opened, and the foot outlet passage 20 and the rear seat foot outlet passage 22 are fully closed as shown in FIG. 20c. In this vent blowing mode, the temperature control mode is set to the full cool mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully closed and the bypass passage 13 is fully opened, and only the cold air is blown out.

  As a result, the cold air flowing into the air mix chamber 14 from the bypass passage 13 is blown into the vehicle interior 55 through the center vent blow passage 18, the side vent blow passage 19, and the rear seat vent blow passage 21.

Bi-level blowing mode (Fig. 21)
Next, the bi-level blowing mode will be described with reference to FIG. The bi-level blowing mode is a mode in which conditioned air is blown out from the vent blowing passages 18, 19, 21 and the foot blowing passage 20. Specifically, by adjusting the opening degree of the opening / closing doors 16C to 20C and 34, the upper vent blowing passage 17 is fully closed as shown in FIG. 21a, the center vent blowing passage 18 is fully opened, and the defroster blowing passage 16 is shown in FIG. 21b. Are fully closed, the side vent outlet passage 19 is fully opened, and the foot outlet passage 20 and the rear seat foot outlet passage 22 are opened as shown in FIG. 21c. In this bilevel blowing mode, the temperature control mode is set to the air mix mode. In other words, the air mix door 6 is set to open the hot air passage 12 and open the bypass passage 13 so as to blow out the temperature-controlled air mixed with the cold air and the hot air in the air mix chamber 14.

  Thus, the conditioned air that has been mixed in the air mix chamber 14 and has the required temperature passes through the center vent outlet passage 18, the side vent outlet passage 19, and the rear seat vent outlet passage 21 from the air mix chamber 14. 55 is blown out. Further, the air is blown into the vehicle interior 55 through the foot blowing passage 20 and the rear seat foot blowing passage 22.

Foot blowing mode (Figure 22)
Next, the foot blowing mode will be described with reference to FIG. The foot blowing mode is a mode for blowing conditioned air from the foot blowing passage 20. Specifically, by adjusting the opening degree of the opening / closing doors 16C to 20C and 34, the upper vent blowing passage 17 is fully closed as shown in FIG. 22a, the center vent blowing passage 18 is fully closed, and the defroster blowing passage 16 is shown in FIG. 22b. Is fully closed, the side vent outlet passage 19 is opened, and the foot outlet passage 20 and the rear seat foot outlet passage 22 are opened as shown in FIG. 22c. Further, the communication path 33 is fully opened. In this vent blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  Thereby, as shown in FIG. 22 b, a part of the warm air flowing into the warm air passage 12 flows into the air mix chamber 14 through the warm air passage 12 as shown in FIG. 22B, and the other flows through the communication passage 33 to the rear seat foot outlet passage 22. It flows into the middle part.

  The warm air (see FIG. 22b) flowing into the air mix chamber 14 through the warm air passage 12 is then blown into the vehicle interior 55 through the side vent blowing passage 19 and the foot blowing passage 20, as shown in FIG. 22c.

On the other hand, the warm air flowing into the intermediate portion of the rear seat foot outlet passage 22 from the communication passage 33 is divided into the upstream side and the downstream side of the rear seat foot outlet passage 22 as shown in FIG. As shown in FIG. 22c, the hot air flowing downstream of the foot outlet passage 20 is directly blown into the passenger compartment 55 from the feet on the rear seat side of the passenger compartment, while the hot air flowing backward to the upstream side of the foot outlet passage 20 is as shown in FIG. The air is blown out from the entrance 20a of the foot blowing passage 20 toward the feet of the front seat occupant through the foot blowing passage. (Depending on the position of the open / close door 34 of the communication passage 33, all of the warm air flowing through the communication passage 33 can be made to flow backward to the upstream side of the rear-seat foot blowing passage 22.)
Here, when the warm air that has passed through the heater core 7 collides with the warm air guide wall 30 and is divided into the air mix chamber 14 side and the communication passage 33 side as described above, it communicates with the rear ventilation surface 7 b of the heater core 7. Since the passage 33 is close, there is a concern that the warm air that has passed through the heater core 7 flows only in the rear seat foot outlet passage 22 in a biased manner. However, in this embodiment, the communication passage 33 does not interfere with the hot air passage inlet 12a when viewed from the ventilation direction Y and is located on the opposite side of the air mix chamber 14 with the hot air passage inlet 12a interposed therebetween. It is possible to prevent the warm air from flowing only in the foot blowing passage 22 for use.

Differential foot blowing mode (Figure 23)
Next, the differential foot blowing mode will be described with reference to FIG. The differential foot blowing mode is a mode in which conditioned air is blown from the defroster blowing passage 16 and the foot blowing passage 20. Specifically, by adjusting the opening degree of the open / close doors 16C to 20C and 34, the upper vent blowing passage 17 is fully closed as shown in FIG. 23a, the center vent blowing passage 18 is fully closed, and the defroster blowing passage 16 is shown in FIG. 23b. Is opened, the side vent outlet passage 19 is opened, and the foot outlet passage 20 and the rear seat foot outlet passage 22 are opened as shown in FIG. 23c. In this differential foot blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  Thereby, the warm air flowing into the air mix chamber 14 from the warm air passage 12 is blown into the vehicle interior 55 through the side vent blow passage 19 and the defroster blow passage 16. Further, the air is blown into the vehicle interior 55 through the foot blowing passage 20 and the rear seat foot blowing passage 22.

Defroster blowing mode (Fig. 24)
Next, the defroster blowing mode will be described with reference to FIG. The defroster blowing mode is a mode for blowing conditioned air from the defroster blowing passage 16. Specifically, by adjusting the opening degree of the opening / closing doors 16C to 20C and 34, the upper vent blowing passage 17 is fully closed as shown in FIG. 24a, the center vent blowing passage 18 is fully closed, and the defroster blowing passage 16 is shown in FIG. 24b. Is opened, the side vent outlet passage 19 is opened, and the foot outlet passage 20 and the rear seat foot outlet passage 22 are fully closed as shown in FIG. 24c. In this defroster blowing mode, the temperature control mode is set to the full hot mode. That is, the air mix door 6 is set so that the warm air passage 12 is fully opened and the bypass passage 13 is fully closed, and only warm air is blown out.

  Thereby, the warm air flowing into the air mix chamber 14 from the warm air passage 12 is blown into the vehicle interior 55 through the side vent blowing passage 19 and the defroster blowing passage 16, respectively.

  The effects of the automotive air conditioner of the second embodiment will be summarized below.

  (I) According to the second embodiment, similarly to the first embodiment, the communication passage 33 communicating with the rear seat outlet passage 22 is provided on the downstream side of the heater core 7 in the middle of the hot air passage 12. Therefore, the hot air flowing through the hot air passage 12 can be made to flow through the rear seat outlet passage 22 by shortcutting the air mix chamber 14. Therefore, it is possible to distribute warm air to the rear seat while suppressing ventilation resistance. At this time, in this embodiment, the communication passage 33 is located at a position where it does not interfere with the hot air passage inlet 12a on the projection surface from the orthogonal direction Y of the ventilation surface 7b of the heater core 7 and sandwiches the hot air passage inlet 12a. Therefore, when the communication passage 33 is opened, it is possible to prevent the warm air flowing through the warm air passage 12 from flowing only in the rear-seat blowout passage 22.

  (II) In particular, in order to make the bypass passage 13 and the hot air passage 12 compact while ensuring the maximum cool air blowing performance, the bypass passage 13 is made straight and the downstream side of the hot air passage 12 is bypassed from the heater core 7. In the structure curved toward the passage 13, the communication passage 33 of the rear-seat blowout passage 22 is easily disposed close to the ventilation rear surface 7 b of the heater core 7, and the above (I) becomes more effective.

  (II) Further, according to the second embodiment, the warm air guide wall 30 is disposed substantially parallel to the ventilation rear surface 7 b of the heater core 7, so that the vehicle is directed toward the ventilation direction Y of the heater core 7. The air conditioner can be downsized. For example, in this embodiment, since the ventilation direction Y of the heater core 7 is the vehicle front-rear direction, the automobile air conditioner can be downsized in the vehicle front-rear direction. In such a structure, since the communication path 33 is more easily disposed closer to the ventilation rear surface 7b of the heater core 7, the above (I) is further effective.

  (IV) According to the second embodiment, the upstream path 7A having a high temperature is positioned on the air mix chamber 14 side, and the downstream path 7B having a low temperature is positioned on the communication path 33 side. It can be avoided reliably that the temperature of the hot air flowing toward the outlet passage 22 side becomes too high.

  (V) Further, according to the automotive air conditioner of this embodiment, the air flowing from the air mix chamber 14 to the rear seat foot outlet passage 22 is circulated in the opposite direction to the hot air flowing through the hot air passage 12. The rear seat foot outlet passage 22 is disposed along the hot air passage 12, and a communication passage 33 that communicates with the rear seat foot outlet passage 22 and has an open / close door 34 is provided upstream of the hot air passage 12. When the passage 33 is opened by the opening / closing door 34, at least a part of the warm air flowing from the communication passage 33 to the rear seat foot outlet passage 22 can flow backward toward the upstream side of the rear seat foot outlet passage 22. is there. Therefore, when the communication passage 33 is opened as shown in FIG. 22, a part of the warm air after passing through the heater core 7 is transferred to the air mix chamber 14 through the warm air passage 12 and the rear seat foot outlet passage 22. Can be directed. Thereby, the passage area of the passage from the heater core 7 to the air mix chamber 14 can be increased, and the ventilation resistance of warm air from the heater core 7 to the air mix chamber 14 can be reduced.

  (VI) Further, according to the automobile air conditioner of this embodiment, when the communication passage 33 is opened by the opening / closing door 34, the warm air flowing from the communication passage 33 into the rear seat foot outlet passage 22 is used for the rear seat. A distribution door (in this example, the opening / closing door 34 also serves as a distribution door) is provided to control the distribution toward the upstream side of the foot blowing passage 22 and the downstream side of the rear seat foot blowing passage 22. Therefore, the warm air introduced from the warm air passage 12 to the rear seat foot outlet passage 22 through the communication passage 33 can be freely distributed to the upstream side or the downstream side of the rear seat foot outlet passage 22 by the distribution door (34). Thereby, the freedom degree of the blowing mode of an automotive air conditioner is expanded.

  (VII) Further, according to the automotive air conditioner of this embodiment, the open / close door 34 of the communication path 33 also serves as the distribution door (34), so the structure can be simplified. Thereby, the air conditioner for automobiles can be made compact and the manufacturing cost can be reduced.

  (VIII) Further, according to the automotive air conditioner of this embodiment, the warm air passage 12 and the rear seat foot are provided by the warm air guide wall 30 that guides the warm air that has passed through the heater core 7 toward the bypass passage 13 side. A blowing passage 22 is defined. That is, there is no useless space between the hot air passage 12 and the rear seat foot outlet passage 22. Therefore, the automobile air conditioner can be made compact. In this embodiment, since the warm air passage 12 and the rear seat foot outlet passage 22 are arranged in the vehicle longitudinal direction without leaving a gap, the automotive air conditioner is compacted in the vehicle longitudinal direction. Yes.

  (IX) In the structure in which the hot air passage 12 is abruptly curved to make the hot air passage 12 compact and the hot air guide wall 30 is opposed to the ventilation rear surface 7b of the heater core 7, the hot air passage 12 Since the ventilation resistance is increased, the effect of expanding the ventilation area of the warm air passage 12 due to the backflow is particularly effective.

FIG. 1 is a side view of an automotive air conditioner according to an embodiment of the present invention. FIG. 2 is a plan view of the air conditioning unit of the automotive air conditioner. FIG. 3 is a front view of a part of the air conditioning unit of the automotive air conditioner. FIG. 4 is a cross-sectional view taken along the line SA-SA in FIG. 3 of the air conditioning unit of the vehicle air conditioner. FIG. 5 is a cross-sectional view taken along the line SB-SB of FIG. FIG. 6 is a cross-sectional view taken along line SC-SC in FIG. 3 of the air conditioning unit of the vehicle air conditioner. FIG. 7 is a perspective view showing the arrangement direction of the heater core. FIG. 8 is a diagram schematically showing the flow of the conditioned air in the vent blowing mode of the vehicle air conditioner. FIG. 8a is a sectional view taken along the line SA-SA in FIG. 3, and FIG. FIG. 8C is a cross-sectional view taken along line SB, and FIG. 8C is a cross-sectional view taken along line SC-SC in FIG. FIG. 9 is a diagram schematically showing the flow of conditioned air in the vent / foot blowing mode of the air conditioner for the vehicle, FIG. 9a is a sectional view taken along the line SA-SA in FIG. 3, and FIG. 9b is FIG. FIG. 10C is a cross-sectional view taken along the line SB-SB, and FIG. 10C is a cross-sectional view taken along the line SC-SC in FIG. FIG. 10 is a diagram schematically showing the flow of the conditioned air in the foot blowing mode of the vehicle air conditioner. FIG. 10a is a sectional view taken along the line SA-SA in FIG. 3, and FIG. FIG. 11C is a cross-sectional view taken along line SB, and FIG. 11C is a cross-sectional view taken along line SC-SC in FIG. FIG. 11 is a diagram schematically showing the flow of the conditioned air in the defroster blowing mode of the air conditioner for the vehicle. FIG. 11a is a sectional view taken along the line SA-SA in FIG. 3, and FIG. FIG. 11C is a cross-sectional view taken along line SB, and FIG. 11C is a cross-sectional view taken along line SC-SC in FIG. 12 is a diagram schematically showing the flow of the conditioned air in the differential foot blowing mode of the vehicle air conditioner. FIG. 12a is a sectional view taken along the line SA-SA in FIG. 3, and FIG. 12c is a sectional view taken along the middle SB-SB line, and FIG. 12c is a sectional view taken along the SC-SC line in FIG. FIG. 13 is a side view of an automotive air conditioner according to an embodiment of the present invention. FIG. 14 is a plan view of an air conditioning unit of the vehicle air conditioner. FIG. 15 is a front view of a part of the air conditioning unit of the vehicle air conditioner. FIG. 16 is a cross-sectional view taken along the line SA-SA in FIG. 15 of the air conditioning unit of the vehicle air conditioner. FIG. 17 is a cross-sectional view taken along the line SB-SB of FIG. FIG. 18 is a cross-sectional view taken along line SC-SC in FIG. FIG. 19 is an exploded perspective view in which the air conditioning unit of the vehicle air conditioner is partially disassembled. FIG. 20 is a diagram schematically showing the flow of the conditioned air in the vent blowing mode of the vehicle air conditioner. FIG. 20a is a sectional view taken along the line SA-SA in FIG. 15, and FIG. 20b is the SB in FIG. FIG. 20C is a cross-sectional view taken along line SC-SC in FIG. 15. FIG. 21 is a diagram schematically showing the flow of conditioned air in the vent / foot blowing mode of the air conditioner for the automobile, in which FIG. 21a is a sectional view taken along line SA-SA in FIG. 15, and FIG. 22c is a sectional view taken along the middle SB-SB line, and FIG. 22c is a sectional view taken along the SC-SC line in FIG. FIG. 22 is a diagram schematically showing the flow of the conditioned air in the foot blowing mode of the vehicle air conditioner, in which FIG. 22a is a sectional view taken along the line SA-SA in FIG. 15, and FIG. 22b is the SB in FIG. FIG. 131C is a cross-sectional view taken along line SC-SC in FIG. 15. FIG. 23 is a diagram schematically showing the flow of the conditioned air in the defroster blowing mode of the vehicle air conditioner. FIG. 23a is a sectional view taken along the line SA-SA in FIG. 15, and FIG. FIG. 23C is a cross-sectional view taken along line SC-SC in FIG. 15. 24 is a diagram schematically showing the flow of the conditioned air in the differential foot blowing mode of the vehicle air conditioner. FIG. 24a is a sectional view taken along the line SA-SA in FIG. 15, and FIG. 24c is a cross-sectional view taken along the line SB-SB, and FIG. 24c is a cross-sectional view taken along the line SC-SC in FIG.

Explanation of symbols

1 ... Air conditioning unit 7 ... Heater core (heat exchanger for heating)
12 ... Warm air passage 13 ... Bypass passage 14 ... Air mix chamber 16 ... Defroster outlet passage (front seat outlet passage)
17 ... Upper vent outlet passage (front seat outlet passage)
18 ... Center vent outlet passage (front seat outlet passage)
19 ... Side vent outlet passage (front seat outlet passage)
20 ... Foot outlet passage (front seat outlet passage)
21 ... Rear vent vent passage 22 ... Rear seat foot blow passage (rear seat blow passage)
30 ... Warm air guide wall 33 ... Communication passage 34 ... Open / close door 41 ... Rear seat foot outlet passage (rear seat outlet passage)
41a ... Entrance (the entrance of the rear seat outlet passage)
42 ... Opening and closing door

Claims (6)

A bypass passage (13) for flowing cold air to bypass the heat exchanger (7) for heating;
The heating heat exchanger (7) is arranged to flow a wind passing through the heating heat exchanger (7), and the downstream side of the heating heat exchanger (7) is directed to the bypass passage (13). A curved hot air passage (12);
An air mix door (6) for controlling the flow rate of the cold air flowing through the bypass passage (13) and the hot air flowing through the hot air passage (12);
An air mix chamber (14) for mixing hot air and cold air at a joining position of the bypass passage (13) and the hot air passage (12);
One or more front seat outlet passages (16, 17, 18, 19, 20) branched from the air mix chamber (14) toward the front seat of the passenger compartment;
With
Cold air from the bypass passage (13) and hot air from the hot air passage (12) are mixed in an air mix chamber (14) to produce conditioned air at a predetermined temperature, and the conditioned air is blown into the vehicle interior. An air conditioner,
A rear-seat blowout passage (41) branched from the downstream side of the heating heat exchanger (7) in the middle of the hot-air passage (12) and toward the rear seat of the passenger compartment;
An open / close door (42) for opening and closing the rear seat outlet passage (41);
With
The inlet (41a) of the rear-seat blowout passage (41) is formed on the projection surface along the direction (Y) perpendicular to the ventilation surface of the heating heat exchanger (7). An automotive air conditioner that is located at a position that does not interfere with the inlet (12a) and that is opposite to the air mix chamber (14) across the inlet (12a) of the hot air passage (12). . The automotive air conditioner according to claim 1,
A warm air guide wall (30) for guiding the warm air that has passed through the heat exchanger for heating (7) toward the bypass passage (13) is provided on the downstream side of the heat exchanger for heating (7). An automotive air conditioner characterized in that the air conditioner is provided substantially parallel to the rear ventilation surface (7b) of the industrial heat exchanger (7). The automotive air conditioner according to claim 1 or 2,
The heating heat exchanger (7) is partitioned into a plurality of paths (7A, 7B),
A path (7A) on the upstream side of the heating medium of the heating heat exchanger (7) is located on the side of the air mix chamber (14), and a path on the downstream side of the heating medium of the heating heat exchanger (7). (7B) is located on the inlet (41a) side of the rear-seat outlet passage (41). A bypass passage (13) for flowing cold air to bypass the heat exchanger (7) for heating;
The heating heat exchanger (7) is arranged to flow a wind passing through the heating heat exchanger, and the downstream side of the heating heat exchanger (7) is curved toward the bypass passage (13). Warm air passage (12),
An air mix door (6) for controlling the flow rate of the cold air flowing through the bypass passage (13) and the hot air flowing through the hot air passage (12);
An air mix chamber (14) for mixing hot air and cold air at a joining position of the bypass passage (13) and the hot air passage (12);
One or more front seat outlet passages (16, 17, 18, 19, 20) branched from the air mix chamber (14) toward the front seat of the passenger compartment;
With
Cold air from the bypass passage (13) and hot air from the hot air passage (12) are mixed in an air mix chamber (14) to produce conditioned air at a predetermined temperature, and the conditioned air is blown into the vehicle interior. An air conditioner,
One or more rear-seat outlet passages (21, 22) from the air mix chamber (14) to the rear seat of the passenger compartment;
A communication passage (33) communicating between the heating heat exchanger (7) in the middle of the hot air passage (12) and the middle of the at least one rear seat outlet passage (22);
An open / close door (34) for opening and closing the communication path (33);
With
The communication path (33) is located at a position where it does not interfere with the inlet (12a) of the warm air path (13) on the projection plane along the direction (Y) orthogonal to the ventilation surface of the heater core 7 and the warm air. An air conditioner for automobiles, which is located on the opposite side of the air mix chamber (14) across the inlet (12a) of the passage (13). The automotive air conditioner according to claim 4,
A warm air guide wall (30) for guiding the warm air that has passed through the heat exchanger for heating (7) toward the bypass passage (13) is provided on the downstream side of the heat exchanger for heating (7). An automotive air conditioner characterized in that the air conditioner is provided substantially parallel to the rear ventilation surface (7b) of the industrial heat exchanger (7). An automobile air conditioner according to claim 4 or claim 5, wherein
The heating heat exchanger (7) is partitioned into a plurality of paths (7A, 7B),
A path (7A) on the upstream side of the heating medium of the heating heat exchanger (7) is located on the side of the air mix chamber (14), and a path on the downstream side of the heating medium of the heating heat exchanger (7). (7B) is located in the said communicating path (33) side, The air conditioner for motor vehicles characterized by the above-mentioned.

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